Confirmation of eradication of Potato spindle tuber viroid (PSTVd) in breeding material of Solanum tuberosum (potato) – no links with commercial cultivars of potato.

Publication Date

Tue, 07 Feb 2017, 11:10

Last Updated

Feb. 7, 2017, 11:10 a.m.

Report Number

NLD-50/1

Country

Netherlands, Kingdom of the

Pest Id

Potato spindle tuber viroid - (PSTVD0)

Report Status

Final

Pest Status (old values from ISPM 8 -1998 )

• Absent: pest eradicated

Pest Status (ISPM 8 - 2021)

• Absent: pest eradicated

Summary

Full eradication of PSTVd in breeding material of potato is confirmed ollowing two years of compulsory testing of all breeding plants actively used for crossing experiments, without any findings at other companies. Following the first finding of PSTVd in breeding material of Solanum tuberosum (potato) on March 7, 2014 at one breeding company, all measures at the affected company and affiliated companies (integral testing, destruction: see June 2014 pest report) have been completed in September 2014. Also during fall 2014, as part of surveillance of breeding material, eleven samples tested positive at one research institute, which had exchanged potato germplasm with the breeding company in the past. Measures were imposed including destruction or integral testing of all remaining potato material to guarantee absence of PSTVd. No further findings were confirmed in 2015 (553 tests of genitors, 593 tests of potato research material at the affected research institute, and 97 voluntary tests). There are no links with commercial cultivars and no infections were found in the annual survey programme for regular seed potatoes in 2014 and 2015 (approximately 800 samples per year). Official safeguards for preventing any contamination of registered cultivars will remain in place. Since the beginning of the 1980s an annual official PSTVd testing scheme has been in place of all newly registered varieties and second year pre-basic nuclear stock and no findings have been recorded in potato varieties of Dutch origin.

Report files

Confirmation of eradication of Potato spindle tuber viroid (PSTVd) in breeding material of Solanum tuberosum (potato) – no links with commercial cultivars of potato.

Website

https://english.nvwa.nl/topics/pest-reporting/contents/pest-reports

Issue keywords

Commodity keywords